In case you watched it and don't know, they cancelled it. It had a good following and a lot of people are mad. I personally think the show was good.

They're still showing the remaining episodes of the season on the NBC website, but they're done airing them on TV. You can see them here:

http://www.nbc.com/Video/rewind/full_episodes/blackdonnellys.shtml

I heard it got axed because it was too violent. We haven't got it over here in the UK or Ireland but I seen the first episode and thought it was good!

it's completely unrealistic. That kinda shit would never happen between Cosa Nostra and the Westies today. The Westies are about ten-fifteen members and associates(combined) strong at most now adays and even the smallest Cosa Nostra Family being the Lucchese have about 75 made members and about 150 associates at any given time, so, because of that I didn't watch it too unrealistic for my tastes.